From d3318cfe498bf53d8ce7d1cd55afad4a93705216 Mon Sep 17 00:00:00 2001 From: Kevin Chiu Date: Mon, 19 Oct 2020 14:16:48 +0800 Subject: mb/google/zork: update USB 2.0 controller Lane Parameter for berknip Enhance USB 2.0 C0/C1 A0/A1 SI by increasing the level of "HS DC Voltage Level" and " Disconnect Threshold Adjustment" registers. COMPDISTUNE0: 0x3->0x7 TXVREFTUNE0: 0x6->0xf BUG=b:166398726 BRANCH=zork TEST=1. emerge-zork coreboot 2. check U2 register is set correctly. 3. U2 SI all pass Change-Id: I69d942605c6d43ece0d71f67df3a5e00b998219b Signed-off-by: Kevin Chiu Reviewed-on: https://review.coreboot.org/c/coreboot/+/46545 Reviewed-by: Felix Held Tested-by: build bot (Jenkins) --- .../google/zork/variants/berknip/overridetree.cb | 48 ++++++++++++++++++++++ 1 file changed, 48 insertions(+) (limited to 'src/mainboard/google/zork/variants/berknip') diff --git a/src/mainboard/google/zork/variants/berknip/overridetree.cb b/src/mainboard/google/zork/variants/berknip/overridetree.cb index 674d5574be1a..d97a2b578058 100644 --- a/src/mainboard/google/zork/variants/berknip/overridetree.cb +++ b/src/mainboard/google/zork/variants/berknip/overridetree.cb @@ -21,6 +21,54 @@ chip soc/amd/picasso register "telemetry_vddcr_soc_offset" = "0" # End : OPN Performance Configuration + # USB 2.0 strength + register "usb_2_port_tune_params[0]" = "{ + .com_pds_tune = 0x07, + .sq_rx_tune = 0x3, + .tx_fsls_tune = 0x3, + .tx_pre_emp_amp_tune = 0x03, + .tx_pre_emp_pulse_tune = 0x0, + .tx_rise_tune = 0x1, + .rx_vref_tune = 0xf, + .tx_hsxv_tune = 0x3, + .tx_res_tune = 0x01, + }" + + register "usb_2_port_tune_params[1]" = "{ + .com_pds_tune = 0x07, + .sq_rx_tune = 0x3, + .tx_fsls_tune = 0x3, + .tx_pre_emp_amp_tune = 0x03, + .tx_pre_emp_pulse_tune = 0x0, + .tx_rise_tune = 0x1, + .rx_vref_tune = 0xf, + .tx_hsxv_tune = 0x3, + .tx_res_tune = 0x01, + }" + + register "usb_2_port_tune_params[2]" = "{ + .com_pds_tune = 0x07, + .sq_rx_tune = 0x3, + .tx_fsls_tune = 0x3, + .tx_pre_emp_amp_tune = 0x03, + .tx_pre_emp_pulse_tune = 0x0, + .tx_rise_tune = 0x1, + .rx_vref_tune = 0xf, + .tx_hsxv_tune = 0x3, + .tx_res_tune = 0x01, + }" + + register "usb_2_port_tune_params[3]" = "{ + .com_pds_tune = 0x07, + .sq_rx_tune = 0x3, + .tx_fsls_tune = 0x3, + .tx_pre_emp_amp_tune = 0x03, + .tx_pre_emp_pulse_tune = 0x0, + .tx_rise_tune = 0x1, + .rx_vref_tune = 0xf, + .tx_hsxv_tune = 0x3, + .tx_res_tune = 0x01, + }" # Enable I2C2 for trackpad, touchscreen, pen at 400kHz register "i2c[2]" = "{ -- cgit v1.2.3